Electrodeposition of copper and other metals.



PATENTED DEC. 10, 1907.

S. O. GOWPER-UOLBS.

BLEOTRODEPOSITION OF COPPER AND OTHER METALS.

APPLICATION FILED NOV'. 12. 1906.

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' Victoria street, Westminster, London, Engfrom which the metal I impurities held in suspension areprojected throng following s a specification.

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izer which is located in the outer casing b and against the casing an gravitate 'into the an- ;nnrrnn- STATE$ Parana c arion.

ELECTRODEPOSITION OF COPPER AND OTHER METALS.

I Application filed November 12 I Specification of Letters Patent.

Patented Dec. 10, 1907. 1906. Serial No. 343-100, I

To all whom it may concern:

Be it known that I, Snnnhnn OsBoRN Cow- PER-CoLns, a subject of the King of Great Britain, residin at Grosvenor Mansions,

land, have invented new and useful 1m rove- Inents in Connection with. the Electro e osition of Copper and other Metals, of whic the My invention relates to improvements in the. electroedeposition of copper or other metals from solutions which have to be maintained in an oxidized state, as for ex the deposition of copper from a eupric solution. I I I In carrying out the invention the solution.

is to be deposited is brought continuously into intimate contact with air and in some cases also with stron light so as'to maintain it in the oxidize state, the. said solution being then freed from air, by' any of the usual methods. To this end I advanta eousl convey the solution .or electrolyte t hroug an atomizer consisting of revolving wheels or vanes which throw the solution 0E them in the form of a fine spray against an outer casing so that the against the walls of the casing and gravitate into an annular ring or sludge bbx. To free thesolution from air itmay: then be passed hatank or other vessel fromwhich the air can be exhausted. The solution may bejiltered if necessary either before or after'the removal of-the air. KI

The accompahying drawing represents in sectional elevation a suitable form of appar ratus for carrving out the invention. I a is a revolving wheel forming the atoms into-which the solution to be purified is .supplied and thrown off peripherally in the form of a fine spray, being projecte against the outer casin r bin such a manner that the impurities he d in sus ension the: sin strike nular sludge box c. The solution .is then assed through the tank in which it is freed i rom air and from which the air can be exhausted as desired. I I

The casing b is provided with a window (Z through which sunlight or rays from an else-- trio lamp pass soas to subject thesolution tact with air so as to convert andfmaintain state,

as it drops down through the casing to the action of the light as hereinbefore described.

In applying the invention to the deposition of copper from a solution in which crude anodes are used and which consequently contains a considerable percentage of forei matter in. suspension, the solution, in ad i tion to passing through the atomizer, is advantageously also tank containing bro en granite or feldspar of varying size; such an arrangement also allows the air contained in the solution after the process of aeration to be released. I find that strong light such as day light oi the arc lighthas a considerable efiect upon thesolution which it clarifies; I therefore find it advanta cons to subject the solution to strong suhlig t or to the rays of ,an arc-1i ht or lights before or site it passes througfi the atomizer or. the sep rating tank, or during itspassagetherethrough. Having 1 now fully described and ascertained my said invention and the manner in which it is to be'perforrned, I declare that what I claim is assed through .a large 1. In the electrodeposition of metals' from solutions which have to be maintained in an oxidized state, theprocess of freeing the solution from impurities in-suspension, which consists in vatomizer an bringing it into intimate conscribed.

it in an oxidized state, substantially as de 2. In the electrodeposition of metals from (passing the same through an I solutions which have to bemai'ntained in an" oxidized state,the process wherein the solution is freed from impurities in suspension bycentrifugal force and is brought into intimate contact with air so as toconvert and maintain it in the oxidized state, substan-' tially as hereinbefore describedur' v In the electrodeposition of metals from solutions which have to be maintained-in an oxidized state, the process wherein the solution is freedfrom impurities in suspension 1;} centrifugal force 'an'dis brought into int mate contact with air and strongllight so as to convert and maintain it in; t

substantially as-= hereinbeiore de scribed; a 4. 1n the electrodeposition of metals from solutions which have to be mainta ned in a e oxidized oxidized state, the process of freeing the solution from impurities in suspension, which consists in ({mssing the same through an atomizer an bringing it into intimate contact with air and in subsequently treating it to free it from air, substantially as described.

5. Inthe electrodeposition of cop er from solutions the process wherein the so ution is 

